1,SiRF III and Quad-band 2,Track by SMS/GPRS 3,Inbuilt Motion Sensor 4,GPS Blind Area Alarm Main FeaturesSiRF III and Quad-band(850/900/1800/1900MHz)Track by SMS/GPRSTrack on DemandTrack by Time IntervalTrack on Mobile PhoneInternal 4MB Memory for LoggingInbuilt Motion SensorInternal Backup BatterySOS AlarmGeo-fence AlarmGPS Blind Area AlarmLow Battery AlarmSpeeding AlarmExternal Power Cut ...